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Old 04-06-2010, 07:35 PM   #108
nrb's70gmc
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Join Date: Sep 2008
Location: magalia,ca
Posts: 366
Re: HEI Ignition Problem

i tested both my coils 1 is bad and the other is good

i think my timimg is mest up because at high rpm it starts sputtering and a little bit of back fire

i have spark i have fuel
the ignition wire (to the dist) has power

the engines is running hotter as well and i believe the timing can affect the temp (but im not positive)

i test drove it again today and same ole problem (its like somone is switching my truck off like a light switch)
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1970 2wd 3/4 ton- 2004 crate 350 thorley tri-y headers-edelbrock performer eps manifold 600cfm performer carb, crane cams energizer cam,lifters, dual 2.5 magnaflows, mallory HEI, powermaster 140 amp altenator, griffen aluminum radiator.(8 MPG)
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